pybind11 VS PEGTL

And how to do this in the best modern way instead of dealing with Pythons native and annoying 30 year old C API: https://github.com/pybind/pybind11

Lots of asio on the C++ side, and lots of asyncio on the python side. Also pybind11 is just plain awesome.

Just use https://github.com/pybind/pybind11 . Your life will be a lot simpler that way.

Some work on the C++ side will be required. There's https://github.com/pybind/pybind11 for example.

Also if you need to write libraries for Python in C++: https://github.com/pybind/pybind11

You should also be aware of pybind11, which makes calling c++ code from python (or vice-versa) a fairly straightforward task, if this becomes necessary or convenient.

Pybind11 is what you are looking for.

pybind11

As a professional C++ programmer I feel a lot of the reasons C++ gets this response is because it's simply not "batteries included" like Go or Rust.

C++ is a very powerful, unopinionated language, that gives you a lot of freedom to attack your problem domain the way you best see fit.

If you're writing a networked application, don't use POSIX sockets, go and find a higher level library. If you're parsing complex text formats, don't iterate over buffers with char*'s, go pick up PEGTL[0]. If you're working on graphs, or need to properly index in-memory data, go pick up Boost[1][2]. If you need a GUI, go pick up Qt.

It's extremely common in C++, due to the lack of a universal package management solution, for people to try and "muddle through" and do shit themselves when it's far outside their core competency.

At one of my last employers, the core product was parsing JSON with std::regex, simply because they couldn't be bothered to integrate a JSON library.

[0] https://github.com/taocpp/PEGTL

[1] https://www.boost.org/doc/libs/1_76_0/libs/graph/

[2] https://www.boost.org/doc/libs/1_76_0/libs/multi_index/doc/i...

You are looking for Boost.Spirit (https://www.boost.org/doc/libs/1_76_0/libs/spirit/doc/x3/html/index.html) or PEGTL (https://github.com/taocpp/PEGTL)

I personally prefer to use parsing combinator libraries in C++, where the "grammar" is just part of normal C++ and directly integrate. Examples are Boost.Spirit, pegtl, or (my own) lexy.

While I'm not quite sure how this might transfer to your approach, with your Haskell-inspired style being quite different from our C++ templates, in the PEGTL our equivalent to your Char, which is called one, is variadic (true to the T in PEGTL a variadic template) and takes a list of possible matches.

In case you are still fighting with left-recursion you might be interested in this: https://github.com/taocpp/PEGTL/blob/master/src/example/pegtl/lua53.hpp

I've found https://github.com/taocpp/PEGTL to be easier to use than boost parser generators.